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(!!!!) (#1 KT77 Pair) KT77 Gold Lion by M-O Valve England 1979 low hours/like new (94ma and 92ma) matched on Amplitrex

$ 629.99

1 Matched Pair) KT77 Gold Lion by M-O Valve England 1979 low hours/like new

7917=1979 same date codes

tubes plugged into sockets to take picture

1 tube) 94ma Gm=12,000
1 tube) 92ma Gm=11,200

 

Matched on Amplitrex

Vplate=265V

Vscreen=250V

Vgrid=-13.5V

Good Ma range=80-100ma

Good Gm range 11,000-12,000

 

General Information

The KT77 is designed primarily for use under ultra-linear conditions (43% taps, Class AB1 push-pull)
and this connection is recommended. Similar performance can be obtained in the tetrode connected mode,
but the output impednace (zout) will be higher. Life expectancy=5000 hours when operated at maximum
ratings (32W) or 10,000 hours when operated at (25W)

- Bob Gjika KT77 guitar amp

 

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